SkValue: implementation, unit test

tests/ValueTest.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
+#include "SkData.h"
+#include "SkMatrix.h"
+#include "SkValue.h"
 #include "Test.h"
-#include "SkValue.h"
+
+static const SkValue::Type example_type =
+    SkValue::Type(SkValue::kMaxPublicObject + 1);
+
+enum { kExampleS32, kExampleF32, kExampleU32, kExampleObject, kExampleBytes,
+       kExampleF32s, kExampleU32s, kExampleU16s, kExampleArray };
+
+static const uint16_t aU16[] = { 1, 2, 3, 4 };
+static const uint32_t aU32[] = { 5, 6, 7, 8 };
+static const float aF32[] = { 9.0f, 9.125f, 9.25f };
+static const char hello[] = "HELLO";
+
+static SkValue make_example(skiatest::Reporter* r, int level = 4) {
+    auto value = SkValue::Object(example_type);
+    value.set(kExampleU32, SkValue::FromU32(1000));
+    value.set(kExampleS32, SkValue::FromS32(-123));
+    value.set(kExampleF32, SkValue::FromF32(0.5f));
+    value.set(kExampleU32, SkValue::FromU32(1234));
+    if (level > 0) {
+        value.set(kExampleObject, make_example(r, 0));
+        value.set(kExampleObject, make_example(r, level - 1)); // replace
+    }
+    SkAutoTUnref<SkData> data(SkData::NewWithCString(hello));
+    value.set(kExampleBytes, SkValue::FromBytes(data));
+
+    SkAutoTUnref<SkData> dataU16(SkData::NewWithCopy(aU16, sizeof(aU16)));
+    SkAutoTUnref<SkData> dataU32(SkData::NewWithCopy(aU32, sizeof(aU32)));
+    SkAutoTUnref<SkData> dataF32(SkData::NewWithCopy(aF32, sizeof(aF32)));
+    value.set(kExampleU16s, SkValue::FromU16s(dataU16));
+    value.set(kExampleU32s, SkValue::FromU32s(dataU32));
+    value.set(kExampleF32s, SkValue::FromF32s(dataF32));
+
+    auto varray = SkValue::ValueArray();
+    varray.append(SkValue::FromU32(99));
+    varray.append(SkValue::FromS32(-99));
+    value.set(kExampleArray, std::move(varray));
+    return value;
+}
+
+DEF_TEST(Value, r) {
+    SkValue val = make_example(r);
+    REPORTER_ASSERT(r, example_type == val.type());
+    SkValue valCopy = val;
+    REPORTER_ASSERT(r, example_type == valCopy.type());
+    valCopy.set(4321, SkValue());
+    auto fn = [&](SkValue::Key k, const SkValue& v){
+        int count;
+        switch (k) {
+            case kExampleS32:
+                REPORTER_ASSERT(r, -123 == v.s32());
+                break;
+            case kExampleF32:
+                REPORTER_ASSERT(r, 0.5f == v.f32());
+                break;
+            case kExampleU32:
+                REPORTER_ASSERT(r, 1234 == v.u32());
+                break;
+            case kExampleObject:
+                REPORTER_ASSERT(r, example_type == v.type());
+                break;
+            case kExampleBytes:
+                REPORTER_ASSERT(r, v.type() == SkValue::Bytes && v.bytes()
+                                && v.bytes()->size() == sizeof(hello));
+                break;
+            case kExampleF32s:
+                REPORTER_ASSERT(r, v.type() == SkValue::F32s && v.bytes()
+                                && v.bytes()->size() == sizeof(aF32)
+                                && v.f32s(&count)
+                                && count == SK_ARRAY_COUNT(aF32));
+                break;
+            case kExampleU32s:
+                REPORTER_ASSERT(r, v.type() == SkValue::U32s && v.bytes()
+                                && v.bytes()->size() == sizeof(aU32)
+                                && v.u32s(&count)
+                                && count == SK_ARRAY_COUNT(aU32));
+                break;
+            case kExampleU16s:
+                REPORTER_ASSERT(r, v.type() == SkValue::U16s && v.bytes()
+                                && v.bytes()->size() == sizeof(aU16)
+                                && v.u16s(&count)
+                                && count == SK_ARRAY_COUNT(aU16));
+                break;
+            case kExampleArray:
+                REPORTER_ASSERT(r, v.type() == SkValue::Array
+                                && v.length() == 2);
+                break;
+            default:
+                ERRORF(r, "unexpected key");
+        }
+    };
+    val.foreach(fn);
+}
+
+DEF_TEST(Value_Matrix, r) {
+    auto m = SkMatrix::MakeTrans(900.0f, 1000.0f);
+    auto val = SkToValue(m);
+    SkMatrix dst;
+    REPORTER_ASSERT(r, SkFromValue(val, &dst));
+    REPORTER_ASSERT(r, dst == m);
+}